Flour-mill.



No. 698,22I. Patented Apr.- 22,- |902.

G. PIACENTINO.

FLOUR NIILL.`

(Appiication mea sept. 2o, 1901.) y (No Model.) 4 Sheets-Sheet x Q l n mus PETERS w; PHoToLlmo.. WASHINGTON, n4 c.

Patented Apr. 22, |902. G. P-IACENTINU.

No. 698,22l.

FLOUBMILL.

(Application led Sept. 20, 1901.)

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(No Model.)

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No. 698,22l.

Patented Apr. .22, |902. G. PIACENTINU.

F L 0 U R M l L L (Application led Sept. 20, 1901.)

(No Model.)

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' its casing.

UNITED STATES' PATENT i l .GIUsnPPEjPinonrrrrNo,l orl BOSTON; MASSACHUSETTS;

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c Vsier.:orrroarioiv.rs1-a iig' ljrt vf Letters Patent 316,698,221, datoinprii 2,2, 1902, v

Application filed September 2i), 191. Serial No. 75,997. (No model.)` i

To @ZZ whom t mctyconoern:

Be it known that I, GIUSEPPE PIAOENTINO, of Boston, inthe county of Suffolk and State of Massachusetts, have invented certain new and useful 'Improvements `i-n`FlOur'-Mills, of which the following is a specification.

This invention hasrelatiou to milling machinery, and more particularly to machinery for disintegrating Wheatiuto the various products which are obtained therefrom.

The invention consists in certain improvements which are illustrated upon the drawings, described iu the following specification, and particularized in the appended claims.

Referriugto the drawings, Figure 1 represents a side elevation 'of aso'mewhat couvenof Fig. 2. Fig. 4 represents a side elevation` of thejprimary bolt and a sectionalv view of section ofthe primary shakin`gsc'reeu.` Fig.

6 represents a side elevation'of thesecondary bolt aud a sectional viewof its casing. Fig. 7 represents a longitudinal section of the ,sec-

l ondary shaking-screen. f

The invention includes, as illustrated upon the drawings, a' plurality of l grinding-mills, bolts, audscreeus, arranged in'proper sequence for effecting thereductiou of thle4 grain. The grain is initially fed by a spout 1 to the hopper of a primary grinding-mill 2. This primary mill is provided with rapidlymoving rolls 3 3, Fig. 3, lgeared together, one of the rollsreceiviug power by belt 4 from the main power-shaft 5; This power-shaft is journaled in bearings 6,secured tothe top of the frame shown upon the drawings.; but it will be understood that instead of the frame illustrated there may be the usual framework Pfound in mills of this character.

From the lower `portion of thel ,grinding- -inill 2a spoilt 7" extends into the. receivingtruuk 8 of an endless bucket conveyer, the endlessbelt9 and buckets A10 of which are indicated by dottedlines in Fig.2. A The endless conveyerbelt passesV around wheels 11 12. The shaft 13 for the wheel 12 is provided with a belt-pulley 14, from which a belt eX- tends to a pulley onthe main shaft 5. The Icrushed grain is elevated by the conveyor Fig. 5 represents a longitudinal` statischer-ged through tues'pout15,rig.4,

into a bolt'lo.l This bolt is inclosedwithin a casing 1,7, audits shaft 18 is equipped with a bevel 19, intermeshing with abevel 20 ou f a' shaft 2l, having a pulley 22, drivenby a belt from the maiu shaft yThe'boltiug-V vcloth of the primary bolt 16 is preferably formed of silk, andthe lbolted product is dropped into 'a chamber 23 below the bolt. In the chamber 23 there is a spiral conveyor 24, connected by gears 25 26'witl1 the shaft 18'of the bolt. p by theA screw conveyer and.` through a'spoutl 27 to a suitable receptacle. Tvheiend of the spout 27 may be'equipped with provisions for the `reception of va bag 'to receive the flour, this being a matter of detail'which4 is relaf tively unimportant. The uubolted yproduct or `that which passes' from the lower end of Tlievbolted product is carried the boltr is delivered intoa spout 28, from I whence it passes to the `hopperf29 o f ay pri.- mary shaking-screen, (indicated as a whole at'30.) The fixed casing or body of this screen isfdivided into three `compartments 31 32 33. v

4Over two ofthe. compartments extends the screen proper, which consists of two sections of foraminous material 34 35, attached'to a movable frame, each section being overoue ot'. the compartments 31 32,one section be.,-`

ing ofy coarser mesh than the other.- The dinally ofthe screen and directly over the screen material 34 35. The material from the bolt is delivered by the hopper 29 upon the top of the section 34 .aud by the shaking of the screen is advanced over the'section34 and towardthe opposite end of the section 35.V

That portion of the product which passesv roo conveyor, (indicated as a/whole at 48,) by i 9O by whicha current of air is forced longituwhich it is elevated and delivered through a spout 49 to a secondary grinding-mill 50, essentially similar to the primary mill first described, except that it reduces the grain to a liner condition. A spout 5l leads from the secondarygrinding-mill to a third bucket conveyer 52, which carries the reground material upward and delivers it through a spout 53 to a secondary bolt 5i, Fig. 6, which is arranged beside the primary bolt and driven by similar mechanism. The secondary bolt is covered with silk, its covering being divided in two sections 55 and 5G, whose meshes differ in point of size or fineness. which does not pass through the meshes of the bolt is delivered by a spout 57 to a secondary shaking-screen, (indicated as a whole at 58.) Below the secondary bolt or reel 54 the receiving portion of the casing 59 of said bolt is divided into two compartments 60 6l, separated by a partition G2. Each one of the compartments is directly under one section of the bolting material, so that they receive products of different grades through the meshes of said material. Spouts 63 and 64: lead from said compartments, respectively, and deliver the material to receptacles placed conveniently for them.

The secondaryshaking-screen Sssubstantially similar to the primary shaking-screen hitherto described, except that the screening material is finer and divided into two sections (i5 GG, one ot which is coarser than the other. Below the sections G5 GG there are two compartments G7 68, from which the spouts 69 70 lead to convenient receptacles. The refuse material which drops off the end of the seetion G6 is delivered to the third compartment 7l, from which leads the spout 72. It will thus be observed that I secu-re the separation or disintegration ofi the grain into eight different grades or products delivered, respectively, by the spouts 27, 45, 46, 63, 64E, 69, 70, and 72, each being separated from the other with great accuracy.

All of the operative parts of the mill are driven from the main driving-shaft 5 by means of belts; but of course I do not limit myself to this particular arrangement, as they The material comprisingaprimary grinding-mill,aprimary bolt, a conveyer for delivering the ground material from the grinding-mill to the bolt, a delivery-spout for the bolted material, a primary screeningapparatus having means fordividing the screened product into dilerent grades and having spouts for delivering the same, a secondary grinding-mill, a conveyer for delivering the unscreened material to said secondary mill, a secondary bolt having means for separating the still further reduced materialinto diiterent grades, means for delivering the reduced material from the secondary grinding-mill to the secondary bolt, a secondary screening apparatus having means for separating the material into different grades and having spouts for delivering said grades of material separately, and means for delivering the unbolted material from the secondary bolt tothe said secondary screening apparatns.

2. An apparatus ofthe character described, comprisingaprimary grindingmi1l,a primary bolt, a conveyer for delivering the ground material from the grinding-mill to the bolt, adelivery-spout for the bolted material, a primary screening apparatus having means for dividing the screened product into different grades and having spouts for delivering the same, a secondary grinding-mill, a conveyer for delivering the u nscreened material to said secondary mill, a secondary bolt consisting of a reel having its bolting-cloth divided into a plurality of sections differing as to the tineness of their meshes, means for delivering the reduced material from the secondary grinding-mill to the secondary bolt, a plurality of compartments below the sections of said reel, means for separately delivering the material from the said compartments, means for delivering the nnscreened material from the secondary bolt, and a secondary screening apparatus consisting ot a casing having a plurality of independent compartments with outlets therefrom, and a reciprocating screen arranged to receive the unscreened material from the secondary bolt, and having sections of foraminous material of different textures, covering all but the final compartment and adapted to deliver the nnscreened material to said final compartment.

In testimony whereof l have affixed my signature in presence of witnesses.

GIUSEPPE PIACENTINO. Witnesses:

C. F. BROWN, PASCAL CUPO, VALTER P. ABELL.

IIO 

